2 St Marks Place Windsor SL4 3BG

1. 23 Oct 2025

   Received by Windsor and Maidenhead

2. 15 Dec 2025

   Decision issued: Permitted

3. 11 Aug 2026

   Added to PlanIndex

Windsor and Maidenhead granted permission on 15 December 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 6 St Marks Place Windsor SL4 3BG

  21/01172/FULL Submitted 14 Apr 2021 50 yards away

  Single storey rear extension and 3 No. front rooflights and 2 No. rear dormers to facilitate a loft conversion

  Granted Full applications Extension Loft or dormer 16 docs
  Small domestic

• Cedar Tree Guest House 90 St Leonards Road Windsor SL4 3DA

  23/00365/FULL Submitted 8 Feb 2023 50 yards away

  Change of use from C1 (Guest House) to C3 (Residential) to create 1 no. residential dwelling with 2no. rear dormers.

  Granted Full applications Loft or dormer 22 docs
  Domestic

• Cedar Tree Guest House 90 St Leonards Road Windsor SL4 3DA

  22/00716/FULL Submitted 16 Mar 2022 50 yards away

  Change of use from C1 (Guest House) to C3 (Residential) to create x8 flats and x2no linked dormers on the south (side) elevation.

  Withdrawn Full applications New dwelling Loft or dormer 57 docs

• 1 St Marks Place Windsor SL4 3BG

  20/02762/TCA Submitted 19 Oct 2020 50 yards away

  Sycamore - cut back to previous pruning points (20%)

  Granted Trees 9 docs

• 18 St Marks Place Windsor SL4 3BG

  22/00059/CPD Submitted 10 Jan 2022 50 yards away

  Certificate of lawfulness to determine whether the proposed detached outbuilding (measuring 4.3m by 1.8m with a height of 2.5m) is lawful.

  Granted Lawful development 6 docs

• 18 St Marks Place Windsor SL4 3BG

  20/03346/FULL Submitted 11 Dec 2020 50 yards away

  Single storey side and rear extensions following demolition of existing single storey rear extension

  Granted Full applications Extension Demolition 20 docs
  Small domestic

• 26/02029/FULL Granted

  5 Kimber Close Windsor SL4 4BJ

  Single storey rear extension.

  Received 17 Aug, published by the council 27 Aug 2026 Full applications
• 26/01955/FULL Granted

  2 Holmlea Road Datchet Slough SL3 9HQ

  Change of use from a dwellinghouse (Use Class C3) to a children's home (Use Class C2) for up to three children, together with conversion of the garage to an office with an en-suite facilities and alterations to fenestration.

  Received 7 Aug, published by the council 27 Aug 2026 Full applications
• 26/01121/FULL Granted

  Zain House 15 Wilton Crescent Windsor SL4 4YJ

  Single storey side/front extension, first floor extension over existing side element with 1no. Juliet balcony and 1no. Juliet balcony to existing rear elevation.

  Received 6 May, published by the council 11 Aug 2026 Full applications
• 26/01977/FULL Granted

  9 St Marks Place Windsor SL4 3BG

  Garage conversion and alterations to fenestration.

  Received 11 Aug, published by the council 24 Aug 2026 Full applications
• 26/01804/FULL Granted

  16 Devereux Road Windsor SL4 1JJ

  Installation of air conditioning compressor unit to the first floor side elevation.

  Received 23 Jul, published by the council 24 Aug 2026 Full applications